Copying exact position and pointing angles of a tracked camera with non-tracked camera
Switching from a constrained cam (track to) to a duplicate and maintaining the exact same view as the original cam when the constraint is removed from the duplicate -

Take the timeline cursor to the switch over frame.  

Duplicate the camera.

The duplicated cam will inherit the same constraint as the first.  To prevent it swinging back when the constraint is removed, select the duplicate cam and press "CTL-A --> Visual Transform".  

Then delete the constraint from the duplicate.

When switched to the duplicate, the cam view should remain exactly as the original cam was.